sensors Mode-S transponder
AB8B7F
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N843FD · BOEING 777-200LR · operated by BANK OF UTAH TRUSTEE
- Hex
- AB8B7F
- Octal
- 52705577
- Decimal
- 11,242,367
- Country
- US
- Tail
- N843FD
- Type
- B77L
- Flights observed
- 123
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address AB8B7F falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| FDX5279 | FedEx Express | 12 | 2026-04-30 |
| FDX9 | FedEx Express | 7 | 2026-05-07 |
| FDX5217 | FedEx Express | 7 | 2026-05-08 |
| FDX10 | FedEx Express | 7 | 2026-05-05 |
| FDX8 | FedEx Express | 5 | 2026-05-05 |
| FDX7 | FedEx Express | 5 | 2026-05-06 |
| FDX77 | FedEx Express | 4 | 2026-05-19 |
| FDX6093 | FedEx Express | 4 | 2026-04-29 |
| FDX5174 | - | 4 | 2026-05-26 |
| FDX4 | FedEx Express | 4 | 2026-05-10 |
| FDX5991 | FedEx Express | 3 | 2026-04-23 |
| FDX5262 | FedEx Express | 3 | 2026-05-21 |
| FDX9141 | - | 2 | 2026-04-14 |
| FDX6040 | FedEx Express | 2 | 2026-05-18 |
| FDX6035 | FedEx Express | 2 | 2026-05-24 |
| FDX60 | FedEx Express | 2 | 2026-05-20 |
| FDX5960 | FedEx Express | 2 | 2026-05-18 |
| FDX5809 | FedEx Express | 2 | 2026-04-30 |
| FDX5608 | - | 2 | 2026-05-14 |
| FDX5384 | FedEx Express | 2 | 2026-05-01 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-28 | FDX5230 | SZX → ANC | May 28, 11:15 UTC | May 28, 20:55 UTC | 9h 40m |
| 2026-05-28 | FDX5230 | SZX → ANC | May 28, 04:40 UTC | May 28, 05:05 UTC | 25m |
| 2026-05-27 | FDX5434 | MEM → ICN | May 27, 10:30 UTC | May 28, 00:40 UTC | 14h 10m |
| 2026-05-26 | FDX5174 | - | May 26, 18:59 UTC | May 27, 04:09 UTC | 9h 10m |
| 2026-05-26 | FDX5174 | - | May 26, 08:24 UTC | May 26, 08:34 UTC | 10m |
| 2026-05-25 | FDX5174 | - | May 25, 23:10 UTC | May 26, 07:40 UTC | 8h 30m |
| 2026-05-25 | FDX5015 | - | May 25, 05:40 UTC | May 25, 23:24 UTC | 17h 45m |
| 2026-05-24 | FDX6035 | MEM → NRT | May 24, 11:30 UTC | May 24, 15:15 UTC | 3h 45m |
| 2026-05-24 | FDX6035 | MEM → NRT | May 24, 11:26 UTC | May 25, 01:26 UTC | 14h 0m |
| 2026-05-23 | FDX5225 | CGN → MEM | May 23, 21:40 UTC | May 24, 07:05 UTC | 9h 25m |
| 2026-05-23 | FDX5024 | CDG → CDG | May 23, 15:10 UTC | May 23, 15:55 UTC | 45m |
| 2026-05-22 | FDX9158 | MEM → CDG | May 22, 11:35 UTC | May 22, 19:05 UTC | 7h 30m |
| 2026-05-21 | FDX5262 | KIX → MEM | May 21, 17:35 UTC | May 22, 05:40 UTC | 12h 5m |
| 2026-05-21 | FDX14 | TPE → ANC | May 21, 13:01 UTC | May 21, 15:10 UTC | 2h 10m |
| 2026-05-21 | FDX295 | - | May 21, 06:20 UTC | May 21, 09:40 UTC | 3h 20m |
| 2026-05-20 | FDX60 | ANC → MEM | May 20, 16:20 UTC | May 20, 22:35 UTC | 6h 15m |
| 2026-05-20 | FDX31 | OAK → NRT | May 20, 08:05 UTC | May 20, 14:25 UTC | 6h 20m |
| 2026-05-19 | FDX6030 | ANC → EWR | May 19, 22:50 UTC | May 20, 00:10 UTC | 1h 20m |
| 2026-05-19 | FDX77 | OAK → HNL | May 19, 16:55 UTC | May 19, 17:10 UTC | 15m |
| 2026-05-19 | FDX77 | OAK → HNL | May 19, 08:00 UTC | May 19, 16:00 UTC | 8h 0m |
| 2026-05-18 | FDX6040 | CAN → SYD | May 18, 21:25 UTC | May 19, 05:30 UTC | 8h 5m |
| 2026-05-18 | FDX5960 | CRK → CRK | May 18, 17:40 UTC | May 18, 18:00 UTC | 20m |
| 2026-05-18 | FDX5960 | CRK → CRK | May 18, 16:25 UTC | May 18, 16:55 UTC | 30m |
| 2026-05-18 | FDX5196 | - | May 18, 13:15 UTC | May 18, 14:40 UTC | 1h 25m |
| 2026-05-17 | FDX6126 | ICN → TPE | May 17, 08:30 UTC | May 17, 10:35 UTC | 2h 5m |
| 2026-05-17 | FDX6127 | TPE → ICN | May 17, 04:35 UTC | May 17, 06:35 UTC | 2h 0m |
| 2026-05-17 | FDX5140 | ANC → IND | May 17, 00:40 UTC | May 17, 02:15 UTC | 1h 35m |
| 2026-05-16 | FDX6856 | - | May 16, 20:20 UTC | May 16, 21:50 UTC | 1h 30m |
| 2026-05-16 | FDX77 | OAK → HNL | May 16, 16:35 UTC | May 16, 17:01 UTC | 25m |
| 2026-05-16 | FDX77 | OAK → HNL | May 16, 07:45 UTC | May 16, 15:40 UTC | 7h 55m |
| 2026-05-15 | FDX6040 | CAN → SYD | May 15, 21:55 UTC | May 16, 06:06 UTC | 8h 11m |
| 2026-05-15 | FDX5153 | NRT → SFS | May 15, 13:25 UTC | May 15, 14:40 UTC | 1h 15m |
| 2026-05-14 | FDX5608 | - | May 14, 22:15 UTC | May 14, 23:40 UTC | 1h 25m |
| 2026-05-14 | FDX5342 | CDG → CAN | May 14, 03:20 UTC | May 14, 07:30 UTC | 4h 10m |
| 2026-05-13 | FDX5810 | LGG → CDG | May 13, 21:55 UTC | May 13, 22:25 UTC | 30m |
| 2026-05-12 | FDX5184 | OAK → LGG | May 12, 22:45 UTC | May 13, 08:55 UTC | 10h 10m |
| 2026-05-12 | FDX5183 | LGG → OAK | May 12, 06:30 UTC | May 12, 17:20 UTC | 10h 50m |
| 2026-05-10 | FDX4 | MEM → CGN | May 10, 23:55 UTC | May 11, 07:55 UTC | 8h 0m |
| 2026-05-09 | FDX97 | CGN → IND | May 9, 20:44 UTC | May 10, 06:30 UTC | 9h 45m |
| 2026-05-09 | FDX5081 | MEM → CGN | May 9, 10:20 UTC | May 9, 18:50 UTC | 8h 30m |
| 2026-05-08 | FDX5217 | CDG → MEM | May 8, 19:45 UTC | May 8, 21:20 UTC | 1h 35m |
| 2026-05-08 | FDX5217 | CDG → MEM | May 8, 19:43 UTC | May 9, 04:51 UTC | 9h 8m |
| 2026-05-07 | FDX9 | STN → IND | May 7, 22:50 UTC | May 8, 17:30 UTC | 18h 40m |
| 2026-05-07 | FDX9 | STN → IND | May 7, 19:50 UTC | May 8, 17:30 UTC | 21h 40m |
| 2026-05-07 | FDX9 | STN → IND | May 7, 19:10 UTC | May 8, 17:30 UTC | 22h 20m |
| 2026-05-07 | FDX38 | MEM → CDG | May 7, 09:10 UTC | May 7, 17:00 UTC | 7h 50m |
| 2026-05-06 | FDX7 | MXP → MEM | May 6, 18:55 UTC | May 7, 05:20 UTC | 10h 25m |
| 2026-05-05 | FDX7 | MXP → MEM | May 5, 21:50 UTC | May 6, 16:55 UTC | 19h 5m |
| 2026-05-05 | FDX8 | MEM → DXB | May 5, 19:50 UTC | May 6, 16:55 UTC | 21h 5m |
| 2026-05-05 | FDX8 | MEM → DXB | May 5, 19:25 UTC | May 6, 16:55 UTC | 21h 30m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the N843FD page for operator, model, and routing details .